QGraphicsView performance in 4.6

Hi,

the "What's New in Qt 4.6" page says:

"Performance Optimizations: Rewritten the QGraphicsView rendering algorithm."

Has anybody tested what this means? Is there a real performance boost? Does it help for the performance problem of QGraphicsView when handling many items.

Thanks

Lodorot

Quote:

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Originally Posted by Lodorot

Does it help for the performance problem of QGraphicsView when handling many items.

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What performance problem are you referring to? Handling many items is usually not a cause of significant slowdowns by itself. It's more often caused by other factors (i.e. complexity of items) - GV has been tested against millions of items with a satisfactory result.

Quote:

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Originally Posted by wysota

GV has been tested against millions of items with a satisfactory result.

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The problem comes if items are moving or changing shape than already 500 items could result in poor performance and the CPU goes really up.


Lodorot